From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: uzibalqa via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#64960: Documentation for copy-sequence Date: Mon, 31 Jul 2023 01:22:06 +0000 Message-ID: References: <83leex2qmn.fsf@gnu.org> <9fd2cf2e-04f7-380e-d8e3-dacb0a14a98d@gutov.dev> <3aitpaf8HcjBZemQByxzBRz3i0bgDDKSSyOql9xR-eoh8a8rDWhxGYvYxa8C0RjrEWtoELtkMI1V4s9VhAjR47CMaPQ5HChKcKmAXKQaSGw=@proton.me> <445c7635-2da3-0dc6-a1cf-c840cecca337@gutov.dev> Reply-To: uzibalqa Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18202"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Dmitry Gutov , Eli Zaretskii , "64960@debbugs.gnu.org" <64960@debbugs.gnu.org> To: Drew Adams Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 31 03:23:25 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qQHd7-0004WH-2v for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 31 Jul 2023 03:23:25 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qQHcm-0000Im-G8; Sun, 30 Jul 2023 21:23:04 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qQHck-0000IG-3s for bug-gnu-emacs@gnu.org; Sun, 30 Jul 2023 21:23:02 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qQHcj-0001eu-Rx for bug-gnu-emacs@gnu.org; Sun, 30 Jul 2023 21:23:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1qQHcj-00013J-OE for bug-gnu-emacs@gnu.org; Sun, 30 Jul 2023 21:23:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: uzibalqa Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 31 Jul 2023 01:23:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 64960 X-GNU-PR-Package: emacs Original-Received: via spool by 64960-submit@debbugs.gnu.org id=B64960.16907665383991 (code B ref 64960); Mon, 31 Jul 2023 01:23:01 +0000 Original-Received: (at 64960) by debbugs.gnu.org; 31 Jul 2023 01:22:18 +0000 Original-Received: from localhost ([127.0.0.1]:51445 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qQHc1-00012H-Kj for submit@debbugs.gnu.org; Sun, 30 Jul 2023 21:22:17 -0400 Original-Received: from mail-40140.protonmail.ch ([185.70.40.140]:16609) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1qQHc0-000124-0I for 64960@debbugs.gnu.org; Sun, 30 Jul 2023 21:22:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail; t=1690766529; x=1691025729; bh=sb/cZvE4zDNpiXH4osuS0jsceZtJvx0Q/pO46FDLrO0=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=GyOKjWJFDSFOrwfACkYnDdpYmBOF8NYKOjQAtice/3v87PkVM4Bk2ZlSdaSEPT33l JEXb4etw7iqc7KOlFUY1XGCtyOlVWXcDqubHD/cA/p2SU6Ix3OBJA3e3+eMRkvDuir f9fuMmgGS0yETmDlQyoYQn3t5bH6QFSFJIVnAPeSiEzZKuykjQVAEK5hNlet6sE4T3 Nh9OGnwKFiroallqVMhUzAZNeJpF3aei7j+ylyT4YBz5tGF6DDR92QgY4sFGebERoV zQv2YOSIA2iIHWagOKIddMR2cQ++fRFtft/UyWsf+utRaQuBfPwdcAgGaKQuW4p9Us 89D5CuOhxkuDA== In-Reply-To: Feedback-ID: 52887082:user:proton X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:266386 Archived-At: ------- Original Message ------- On Monday, July 31st, 2023 at 1:13 PM, Drew Adams w= rote: > > > It is not evident what the meaning of "shared" means ? If I use a > > > string, I get an exact copy and when I change a single character > > > the newlist is changed, the original string remains the same. > > > So what is shared exactly ? > >=20 > > A string doesn't share anything because characters are not reference > > values. They are simply copied. >=20 >=20 > Yes and no. > Chars are not shared, but char properties are. >=20 > (setq foo (propertize "abcd" 'p1 t 'p2 42)) > ;; -> #("abcd" 0 4 (p2 42 p1 t)) >=20 > (setq bar (copy-sequence foo)) > ;; -> #("abcd" 0 4 (p1 t p2 42)) >=20 > (aset foo 1 ?W) ; -> ?W, aka 87 >=20 > foo ; -> #("aWcd" 0 4 (p2 42 p1 t)) >=20 > bar ; -> #("abcd" 0 4 (p1 t p2 42)) Ok, meaning that the actual string becomes different, yet changing the a property, changes the property on both foo and bar ?